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Trapezia and Infrared Sources

Published online by Cambridge University Press:  12 April 2016

A. Poveda ,
C. Allen  and
J. Warman
A. Poveda
Affiliation:
Instituto de Astronomía Universidad Nacional Autónoma de México
C. Allen
Affiliation:
Instituto de Astronomía Universidad Nacional Autónoma de México
J. Warman
Affiliation:
Instituto de Astronomía Universidad Nacional Autónoma de México

Abstract

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From dynamical considerations, a significant fraction of multiple systems of trapezium type is expected to be quite young. A search for positional coincidences between trapezia from various catalogues and infrared sources at 2.2 microns was undertaken. It was found that between 12% and 20% of the trapezia can be associated with infrared sources. Various statistical tests indicate that these coincidences are not likely to be accidental. The nature of the infrared sources associated with trapezia is briefly discussed.

Resumen

Resumen

Con base en consideraciones dinámicas se espera que una fracción apreciable de los sistemas múltiples de tipo trapecio sean muy jóvenes. Se ha efectuado una búsqueda de las coincidencias en posición entre trapecios de varios catálogos y fuentes infrarojas en 2.2 mieras. Se encuentra que del 12 al 20% de los trapecios pueden ser asociados con fuentes infrarojas. Varias pruebas estadísticas indican que no es probable que estas coincidencias sean casuales. Se discute brevemente la naturaleza de las fuentes infrarojas asociadas a trapecios.

Type
Session 4
Information
International Astronomical Union Colloquium , Volume 33: Observational Parameters and Dynamical Evolution of Multiple Stars , May 1977 , pp. 127 - 132
Copyright
Copyright © Otto G. Franz and Paris Pismis 1977

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